The Total solution for NCERT class 6-12
1.
Findthe mean and standard deviation of each of the following probabilitydistributions:
xi :2 3 4
pi :2.2 0.5 0.3
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Answer 1 : 1.
Adiscrete random variable X has the probability distribution given below:
X : 0.5 1 1.5 2
P(X) : k k2 2k2 k
(i) Find thevalue of k.
(ii)Determine the mean of the distribution.
Answer 2 :
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Answer 10 :